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Method of and apparatus for providing an interface between an analog facsimile device and a wireless network

  • US 6,157,846 A
  • Filed: 10/01/1997
  • Issued: 12/05/2000
  • Est. Priority Date: 06/17/1997
  • Status: Expired due to Fees
First Claim
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1. A method for receiving and transmitting a document image in an interface device, comprising the steps of:

  • determining that a fax machine has transmitted a signal indicating that it has gone "off hook";

    transmitting a tone to the fax machine, which tone emulates a dial tone;

    receiving DTMF tones from the fax machine temporarily storing these dialed digits, which DTMF tones include calling information;

    transmitting a called station ID to the fax machine;

    receiving a station ID;

    receiving a digital command signal from the fax machine;

    receiving a training sequence signal from the fax machine;

    transmitting a first confirmation signal to the fax machine;

    receiving dialed digits;

    temporarily storing the dialed digits;

    receiving fax data in the form of a document image;

    receiving a signal indicative that all fax data has been transmitted by the fax machine;

    transmitting to the fax machine a second confirmation signal;

    receiving a disconnect signal;

    receiving an "on-hook" signal;

    transmitting a dial string message including the temporarily stored dialed digits in an origination message to a wireless transceiver requesting Fax Class 2.0;

    transmitting an "AT+FDT" signal to the wireless transceiver;

    receiving a signal indicative of a line connection;

    transmitting the stored document image;

    transmitting a return to command signal (RTC); and

    transmitting an EOP signal wherein the wireless transceiver terminates its wireless communication link.

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